FLEXIBLE CONDUIT FOR USE IN FRESH AIR INTAKE AND GAS VAPOR OUTLET INCORPORATED INTO A VEHICLE FUEL TANK TO ELIMINATE WHISTLING WITHIN THE CONDUIT

摘要

A tubing incorporated into a vehicle fuel tank system including an elongated and flexible tubular shaped body having a hollow interior exhibiting pluralities of alternating inner and outer diameter spaced locations. The inner diameter locations exhibit a first plurality of annularly projecting ribs, the outer diameter locations exhibiting a second plurality of ribs exhibiting a larger dimension. In this fashion, a plurality of individual tubing sections are incorporated into each of gas vapor (outflow) vent lines and fresh intake air (inflow) lines such that an inner airflow profile is established within the body to retard the generation of sound associated with volumetric airflow.